/*******************************************************************************
 * Copyright 2017 Bstek
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy
 * of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
package com.bstek.urule.builder.table;

import com.bstek.urule.RuleException;
import com.bstek.urule.dsl.CellScriptRuleParserBaseVisitor;
import com.bstek.urule.dsl.RuleParserLexer;
import com.bstek.urule.dsl.RuleParserParser;
import com.bstek.urule.dsl.ScriptDecisionTableErrorListener;
import org.antlr.v4.runtime.ANTLRInputStream;
import org.antlr.v4.runtime.CommonTokenStream;

/**
 * @author Jacky.gao
 * @since 2015年5月6日
 */
public class CellScriptDSLBuilder {
    public String buildCriteriaScript(String script, String propertyName) {
        ANTLRInputStream antlrInputStream = new ANTLRInputStream(script);
        RuleParserLexer lexer = new RuleParserLexer(antlrInputStream);
        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
        RuleParserParser parser = new RuleParserParser(tokenStream);
        ScriptDecisionTableErrorListener errorListener = new ScriptDecisionTableErrorListener();
        parser.addErrorListener(errorListener);
        CellScriptRuleParserBaseVisitor visitor = new CellScriptRuleParserBaseVisitor(propertyName);
        String resultScript = visitor.visit(parser.decisionTableCellCondition());
        String error = errorListener.getErrorMessage();
        if (error != null) {
            throw new RuleException("Script Parse error:" + error);
        }
        return resultScript;
    }
}
